net: plumb DnsRRResolver from IOThread to HttpNetworkSession.

net/http/http_network_layer.cc

Index: net/http/http_network_layer.cc
diff --git a/net/http/http_network_layer.cc b/net/http/http_network_layer.cc
index a883db261d14aee90a375f8692b58d13426bb61c..a773ac46b0a65c268fff4d03bb81cda0249ae4eb 100644
--- a/net/http/http_network_layer.cc
+++ b/net/http/http_network_layer.cc
@@ -22,6 +22,7 @@ namespace net {
 // static
 HttpTransactionFactory* HttpNetworkLayer::CreateFactory(
     HostResolver* host_resolver,
+    DnsRRResolver* dnsrr_resolver,
     ProxyService* proxy_service,
     SSLConfigService* ssl_config_service,
     HttpAuthHandlerFactory* http_auth_handler_factory,
@@ -30,8 +31,8 @@ HttpTransactionFactory* HttpNetworkLayer::CreateFactory(
   DCHECK(proxy_service);
 
   return new HttpNetworkLayer(ClientSocketFactory::GetDefaultFactory(),
-                              host_resolver, proxy_service, ssl_config_service,
-                              http_auth_handler_factory,
+                              host_resolver, dnsrr_resolver, proxy_service,
+                              ssl_config_service, http_auth_handler_factory,
                               network_delegate,
                               net_log);
 }
@@ -48,6 +49,7 @@ HttpTransactionFactory* HttpNetworkLayer::CreateFactory(
 HttpNetworkLayer::HttpNetworkLayer(
     ClientSocketFactory* socket_factory,
     HostResolver* host_resolver,
+    DnsRRResolver* dnsrr_resolver,
     ProxyService* proxy_service,
     SSLConfigService* ssl_config_service,
     HttpAuthHandlerFactory* http_auth_handler_factory,
@@ -55,6 +57,7 @@ HttpNetworkLayer::HttpNetworkLayer(
     NetLog* net_log)
     : socket_factory_(socket_factory),
       host_resolver_(host_resolver),
+      dnsrr_resolver_(dnsrr_resolver),
       proxy_service_(proxy_service),
       ssl_config_service_(ssl_config_service),
       session_(NULL),
@@ -70,6 +73,7 @@ HttpNetworkLayer::HttpNetworkLayer(
 HttpNetworkLayer::HttpNetworkLayer(
     ClientSocketFactory* socket_factory,
     HostResolver* host_resolver,
+    DnsRRResolver* dnsrr_resolver,
     ProxyService* proxy_service,
     SSLConfigService* ssl_config_service,
     SpdySessionPool* spdy_session_pool,
@@ -78,6 +82,7 @@ HttpNetworkLayer::HttpNetworkLayer(
     NetLog* net_log)
     : socket_factory_(socket_factory),
       host_resolver_(host_resolver),
+      dnsrr_resolver_(dnsrr_resolver),
       proxy_service_(proxy_service),
       ssl_config_service_(ssl_config_service),
       session_(NULL),
@@ -92,6 +97,7 @@ HttpNetworkLayer::HttpNetworkLayer(
 
 HttpNetworkLayer::HttpNetworkLayer(HttpNetworkSession* session)
     : socket_factory_(ClientSocketFactory::GetDefaultFactory()),
+      dnsrr_resolver_(NULL),
       ssl_config_service_(NULL),
       session_(session),
       spdy_session_pool_(NULL),
@@ -131,6 +137,7 @@ HttpNetworkSession* HttpNetworkLayer::GetSession() {
       spdy_session_pool_.reset(new SpdySessionPool(ssl_config_service_));
     session_ = new HttpNetworkSession(
         host_resolver_,
+        dnsrr_resolver_,
         proxy_service_,
         socket_factory_,
         ssl_config_service_,
@@ -140,6 +147,7 @@ HttpNetworkSession* HttpNetworkLayer::GetSession() {
         net_log_);
     // These were just temps for lazy-initializing HttpNetworkSession.
     host_resolver_ = NULL;
+    dnsrr_resolver_ = NULL;
     proxy_service_ = NULL;
     socket_factory_ = NULL;
     http_auth_handler_factory_ = NULL;